发明名称 |
Copolymer and preparation method and application thereof |
摘要 |
A copolymer and preparation method and application thereof are disclosed. The copolymer is random copolymer obtained from monomers consisting of acrylamide, acrylic acid, alkenyl sulfonate, 2-acrylamido-dodecyl sulfonate, p-styrene sulfonate or isoprene sulfonate and so on. The copolymer of present invention can be used as fluid loss additive and has good fluid loss properties, which would not make the drilling fluid thicken at high temperature of 200° C. and high salt conditions of saturated brine. It has a medium-pressure fluid loss after aging and rolling for 16 h at high temperature of 200° C., as measured in accordance with the American Petroleum Institute Standard Test at room temperature, and has good properties of high temperature-resisting and salt-resisting. |
申请公布号 |
US8623791(B2) |
申请公布日期 |
2014.01.07 |
申请号 |
US201113244102 |
申请日期 |
2011.09.23 |
申请人 |
YANG XIAOHUA;WANG LIN;LI JIAFEN;QIAN XIAOLIN;WANG XIANGUANG;LI SHENG;REN LIWEI;SU CHANGMING;WANG ZHIFA;LIU GUICHUAN;SHI BINGZHONG;CHINA PETROLEUM & CHEMICAL CORPORATION;SINOPEC RESEARCH INSTITUTE OF PETROLEUM ENGINEERING |
发明人 |
YANG XIAOHUA;WANG LIN;LI JIAFEN;QIAN XIAOLIN;WANG XIANGUANG;LI SHENG;REN LIWEI;SU CHANGMING;WANG ZHIFA;LIU GUICHUAN;SHI BINGZHONG |
分类号 |
C09K8/12;C09K8/32;C09K8/588 |
主分类号 |
C09K8/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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